move W_StructType logic from W_Struct to its type
Merge branch 'master' into structs
Merge branch 'master' into structs
Merge branch 'master' into structs
throw an exception if more than one prop:procedure defined for a struct
fix `unsafe-struct*-ref` and `unsafe-struct*-set!` do not work on callable structs #73
add w_prop_arity_string support and inheritance of props
second fix `unsafe-struct*-ref` and `unsafe-struct*-set!` do not work on callable structs #73